4-12/4-20/4-30mm Step Drill Set HSS Spiral Flute Cross Point Shank With 3 Flats - TECWERK

Taking advantage of HSS construction and spiral flutes ensures efficient chip evacuation and longer tool life, while the split-point geometry and three-flat shank deliver repeatable centring and secure clamping; order the set directly via Metav Werkzeuge or consult the team for application advice.

TECWERK Step Drill Set Ø 4–12 / 4–20 / 4–30 mm, HSS, spiral-fluted, split-point

TECWERK Step Drill Set for progressive hole enlargement and accurate stepped drilling in workshop and production environments.

• HSS for high wear resistance
• Spiral flutes for fast chip evacuation
• Split-point tip reduces centre walking
• Three-flat shank for secure clamping

Faster, cleaner holes with high-speed steel construction

The HSS composition provides a balance of toughness and wear resistance that suits repeated drilling tasks. Combined with spiral flutes, the geometry promotes continuous chip removal from the hole, reducing heat build-up and the risk of material melting or smearing. This translates into cleaner hole edges and fewer secondary operations, which improves throughput and lowers cycle time in routine workshop work.

Reliable centring and secure tool retention for consistent results

The split-point design reduces the tendency of the drill to wander at the start of the cut, enabling accurate positioning without the need for pilot holes. Paired with the three-flat shank, the drills sit firmly in a three-jaw or specialised chuck, preventing rotation slip and ensuring consistent concentricity across repetitive holes. The resulting process stability supports predictable part quality and reduces rework.

Practical workshop features that aid set integration

The set offers defined step pitches to control enlargement increments: Ø 4–12 mm = 1 mm, Ø 4–20 mm = 2 mm, Ø 4–30 mm = 2 mm, enabling gradual diameter increase with minimal burr formation. The spiral-fluted profile and split-point geometry simplify chip breaking and evacuation, while the standard shank profile allows straightforward use with common drilling machines and handheld drills equipped with suitable chucks. The package is supplied in a compact plastic case for organised storage and easy transport between workstations.

For a dependable step-drilling solution from TECWERK that integrates into production and workshop routines, contact Metav Werkzeuge for technical guidance and ordering via info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000862088NW
• Description: Step drill set D.4-12 / 4-20 / 4-30 mm, HSS, spiral-fluted, split-point, TECWERK
• Packaging unit: 1

Facts

• Step pitch Ø 4–12 mm: 1 mm
• Step pitch Ø 4–20 mm: 2 mm
• Step pitch Ø 4–30 mm: 2 mm

Special features

• HSS material
• Spiral flute geometry
• Split-point tip (cross grind)
• Shank with three flats
• Supplied in plastic case

FAQ

What drilling machines are suitable for these step drills?
The TECWERK step drill set is compatible with standard bench and handheld drills that accept a three-flat shank; the three-flat profile improves clamping security in chucks and drill holders.

How does the split-point help when starting a hole?
The split-point geometry on the TECWERK drills reduces radial forces at entry, minimising walking and often eliminating the need for a pilot hole for accurate hole placement.

Are the step pitches adjustable within the set?
The set provides fixed step pitches: Ø 4–12 mm = 1 mm, Ø 4–20 mm = 2 mm, Ø 4–30 mm = 2 mm, designed for controlled, sequential diameter enlargement.

Is chip evacuation improved compared with straight-flute step drills?
Yes; the spiral flutes on the TECWERK tools promote axial chip removal, reducing heat and helping to maintain hole quality over longer runs.

Which identifier should be quoted when enquiring about this set?
Please quote SKU 2000862088NW when referring to this TECWERK step drill set to ensure precise identification.

Manufacturer/Responsible: NORDWEST Handel AG, Robert-Schuman-Straße 17, 44263 Dortmund